/etc/logcheck/ignore.d.server/nntpcache is in logcheck-database 1.3.17.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ nntpcache-client\[[0-9]+\]: clean shutdown$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ nntpcache-update\[[0-9]+\]: clean shutdown$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ nntpcache-nocem\[[0-9]+\]: clean shutdown$
|